B. Vinnakota, Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
N.J. Stessman, Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract: We present new methods to reduce test times in sequential circuits using scan. The problem of reducing test application time is shown to be computationally intractable. We discuss heuristic techniques to reduce test times. Fault simulation and correlation between test vectors are used to reduce test times, without affecting fault coverage. Our methods can be used to process a test set after test generation is complete. They lead to a substantial reduction in test times.
Index Terms:
boundary scan testing; fault diagnosis; logic testing; sequential circuits; automatic testing; graph theory; correlation methods; test application time; scan design schemes; sequential circuits; computationally intractable problem; heuristic techniques; fault simulation; test vector correlation; fault coverage; test times
Citation:
B. Vinnakota, N.J. Stessman, "Reducing test application time in scan design schemes," vts, pp.0367, 13th IEEE VLSI Test Symposium (VTS'95), 1995